The American house-carpenter; a treatise upon architecture, cornices and mouldings, framing, doors, windows, and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 42
ght lines, forming the triangle, a c b ; bisect theangle, c b a, (Art. 77,) with the line, b d; also bisect c a in e,and erect e d, perpendicular to a c, cutting 6 d in d ; then d isthe fourth point required. A fifth point may be found, as at/, by assuming a, d and 6,as the three given points, and… … 87.— To describe a segment of a circle by a set-triangle.Let a b, (Fig. 46,) be the chord, and c d the height of the seg-ment. Secure two straight-edges, or rulers, in the position, c eand c/ by nailing them together at c, and affixing a brace frome to/; put in pins at a and b ; move the angular…
Carpentry · Architecture
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